Continents have a density of ________ and are made of ________ rock
A) 1.9 g/cm3; sandstone
B) 4.5 g/cm3; gneiss
C) 3.0 g/cm3; basalt
D) 2.7 g/cm3; granite
Answer: D
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Most of the oil that pollutes the ocean comes from ____.
A. blowouts (rupture of a borehole of an oil rig in the ocean) B. tanker accidents C. environmental terrorism D. urban and industrial runoff from land E. normal operation of offshore wells
Which of the following statements is out of order in the ideal application of the scientific method?
A) Observe a phenomenon that stimulates a question. B) Design an experiment. C) Observe the outcome of an experiment. D) Formulate a rule. E) Make a hypothesis.
The problem of food waste is of greater concern in:
A. The industrial world B. The less developed world C. Africa D. India